The future is here. Taking the test tube baby even further, there is the genetic blending until 3 people can be the mother/father of a child. Great and creepy premise for a thriller. One mother housebound hiding from the other "mother" while the child grows up unaware of the mystery and science of her birth. A chance encounter online (are there really any chance encounters) starts the ball rolling downhill to what most certainly is going to be a disaster for someone.